/*by yjn*/

body {
    min-height: 100%;
    font-family: Microsoft YaHei;
    height: 100%;
    background-image: url("../images/admin_chenge.png");
    background-repeat: no-repeat;
    background-attachment:fixed;
    background-size: cover;
}

.container1{
    position:relative;
    width:100%;
    min-height:600px;
    /*设置padding-bottom值大于等于footer的height值，以保证main的内容能够全部显示出来而不被footer遮盖；*/
    padding-bottom: 150px;

}

.ur1{
    margin-top: 5%;
    margin-left: 45%;
}
.tab{
    margin-top: 15%;
    margin-left: 10%;
    width: 80%;
}
.footer
{
    background-color: black;
    text-align: center;
    width:100%;
    position:absolute;
    bottom: 0;
    left:0;
    height: 100px;
}

.mandarin{
    position: absolute;
    height: 80px;
    margin-top: 1%;
    margin-left: -30%;
    border-radius: 50%;
}